Ce-radical Scavenger-Based Perfluorosulfonic Acid Aquivion Membrane for Pressurised PEM Electrolysers.

A Ce-radical scavenger-based perfluorosulfonic acid (PFSA) Aquivion membrane (C98 05S-RSP) was developed and assessed for polymer electrolyte membrane (PEM) electrolyser applications. The membrane, produced by Solvay Specialty Polymers, had an equivalent weight (EW) of 980 g/eq and a thickness of 50 μm to reduce ohmic losses at a high current density. The electrochemical properties and gas crossover through the membrane were evaluated upon the formation of a membrane-electrode assembly (MEA) in a range of temperatures between 30 and 90 °C and at various differential pressures (ambient, 10 and 20 bars).